Duke J. Johnson, M.D.
Family Medicine Physician · Buena Park, CA
Duke J. Johnson, M.D. is a family medicine physician with a practice address in Buena Park, California, and NPI 1225147127, issued on Aug 30, 2006. Check the license (California G55013, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duke J. Johnson
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- G55013 CA
M-7427 ID
Self-reported in NPPES; status is on the state search - Practice location
- 5600 Beach Blvd, Buena Park, CA 90621
- Phone
- (208) 651-1182
- Enumerated
- Aug 30, 2006
- Record last updated
- Sep 11, 2025
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Duke J. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
315 Medicare Part D claims for 67 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril26 claims
- Levothyroxine Sodium22 claims
- Prednisone19 claims
- Losartan Potassium13 claims
- Amlodipine Besylate12 claims
- Meloxicam12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Duke J. Johnson among 17,133 family medicine physician records in California
Duke J. Johnson, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 family medicine physician records list a practice address in Buena Park
They are 13 of the 728 NPPES records with a practice address in Buena Park, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Buena Park → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Martin Ahn, M.D.Buena Park, CA 906211649342171
- Andrea Chua Dy, FNP-BCBuena Park, CA 906211821869231
- Mona Fahmy, DDSBuena Park, CA 906211801909858
- Khang Hoang, D.O.Buena Park, CA 906211538383104
- Inil Lin, M.D.Buena Park, CA 906211942395983
- Steven Smith, M.D.Buena Park, CA 906211568682979
- Joseph Yi, MDBuena Park, CA 906211861565285
- Steve Yoo, DOBuena Park, CA 906211821473190
Common questions
What is Duke J. Johnson, M.D.'s NPI number?
Duke J. Johnson, M.D.'s National Provider Identifier (NPI) is 1225147127, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Duke J. Johnson, M.D. located?
The NPPES record lists a practice address at 5600 Beach Blvd, Buena Park, CA, 90621. Phone: (208) 651-1182. Providers update this record themselves, so call before visiting.
How can I verify Duke J. Johnson, M.D.'s license?
NPPES lists California license number G55013, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Duke J. Johnson, M.D. prescribe under Medicare Part D?
In 2024, Duke J. Johnson, M.D. had 315 Medicare Part D claims for 67 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.